scholarly journals Performance of Lettuce and Water Spinach in Koi Fish-based Aquaponics System

2019 ◽  
pp. 1-7
Author(s):  
Yuli Andriani ◽  
Zahidah . ◽  
Yayat Dhahiyat ◽  
Herman Hamdani ◽  
Dan Ristiana Dewi
Keyword(s):  
Survival Rate ◽  
Cyprinus Carpio ◽  
Block Design ◽  
Fish Growth ◽  
Stem Length ◽  
System Research ◽  
Water Spinach ◽  
Randomized Block Design ◽  
Absolute Growth ◽  
Fish Survival

This research aims to determine the growth of lettuce and water spinach plants used as biofilter in koi fish (Cyprinus carpio) aquaponic system. Research was carried out at the Laboratory of Fisheries, Ciparanje, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran from March to April 2018. Research was carried out experimentally using Randomized Block Design (RBD) with 2 treatments and 6 repetitions. The treatments were a combination of koi and  water spinach, and a combination of koi and lettuce. The parameters observed were fish growth, fish survival, increase in length of plant stems and increase in leaf strands. The combination of koi fish and water spinach plants produced the highest productivity of plants, with stem length of 39 cm and the addition of 15 leaflets. This combination also produced the highest absolute growth of 3.93 grams / fish and survival rate of 100%.

scholarly journals Lettuce and water spinach growth in silver catfish (Pangasius Sp) culture using aquaponic system

Jurnal Agro ◽  
10.15575/8724 ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 148-157
Author(s):  
Yuli Andriani ◽  
Zahidah Zahidah ◽  
Yayat Dhahiyat ◽  
Herman Hamdani ◽  
Ristiana Dewi
Keyword(s):  
Water Quality ◽  
Block Design ◽  
Water Quality Management ◽  
Fish Growth ◽  
Stem Length ◽  
Fish Feed ◽  
Water Spinach ◽  
Silver Catfish ◽  
Randomized Block Design ◽  
Absolute Growth

Solid and liquid wastes from feces and fish feed residues can affect water quality, which in turn affect fish physiological processes, behavior, growth and mortality. So it is necessary to have water quality management in the aquaponic system. This study aimed to observe the growth of lettuce and water spinach as biofilters in silver catfish culture (Pangasius sp) using aquaponic system. The study was conducted at the Laboratory of Fisheries, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, from March to April 2018. This was an experimental study using Randomized Block Design (RBD) with two treatments and six repetitions to compare between combination of silver catfish and water spinach with silver catfish and lettuce combination. The parameters observed were fish growth, fish survival, increase in  stem length, and increase in the number of leaves. The results show silver catfish and water spinach combination produced the highest crop with a stem length of 38.7 cm and more leaves with an addition of 16 leaves. A higher absolute growth of 7.79 grams fish-1 and 100% survival are also seen in this combination. Furthermore, water spinach is more effective as biofilter for aquaponic systems than lettuce.Limbah padat dan cair dari feses dan sisa pakan ikan dapat mempengaruhi kualitas air, yang selanjutnya memengaruhi proses fisiologis ikan, perilaku, pertumbuhan, dan angka kematian. Sehingga perlu adanya manajemen kualitas air pada sistem akuaponik. Penelitian ini bertujuan untuk mengamati pertumbuhan selada dan kangkung sebagai biofilter pada budidaya ikan lele (Pangasiussp) dengan sistem aquaponik. Penelitian dilaksanakan di Laboratorium Perikanan, Fakultas Perikanan dan Ilmu Kelautan Universitas Padjadjaran dari bulan Maret hingga April 2018. Penelitian ini merupakan penelitian eksperimental dengan menggunakan Rancangan Acak Kelompok (RAK) dengan dua perlakuan dan enam ulangan untuk membandingkan kombinasi Ikan Patin dan kangkung dengan kombinasi lele dan selada. Parameter yang diamati adalah pertumbuhan ikan, kelangsungan hidup ikan, pertambahan panjang batang, dan pertambahan jumlah daun. Hasil penelitian menunjukkan Kombinasi lele perak dan kangkung menghasilkan tanaman tertinggi dengan panjang batang 38,7 dan daun lebih banyak dengan penambahan 16 helai daun. Pertumbuhan absolut yang lebih tinggi sebesar 7,79 g ikan-1 dan kelangsungan hidup 100% juga terlihat pada kombinasi ini. Dengan demikan kangkung merupakan biofilter yang lebih efektif untuk aquaponik dibandingkan selada.

scholarly journals PENGARUH KEPADATAN SPAT KERANG MUTIARA (PINCTADA MAXIMA) DENGAN METODE LONGLINE TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP

2019 ◽  
Vol 19 (2) ◽  
pp. 221
Author(s):  
Muhammad Junaidi ◽  
Zaenal Ahmad ◽  
Baiq Hilda Astriana
Keyword(s):  
Survival Rate ◽  
Block Design ◽  
Pearl Oyster ◽  
Daily Growth ◽  
Oyster Spat ◽  
Growth And Survival ◽  
Randomized Block Design ◽  
Standard Level ◽  
Absolute Growth ◽  
Pinctada Maxima

Abstrak : Penelitian kepadatan spat kerang mutiara yang dipelihara di alam perlu terus dilakukan karena belum ada patokan tingkat kepadatan yang sesuai untuk usaha komersial. Oleh karena itu dilakukan penelitian dengan tujuan mengetahui pengaruh kepadatan terhadap pertumbuhan dan tingkat kelangsungan hidup spat kerang mutiara (Pinctada maxima).  Metode yang digunakan adalah Rancangan Acak Kelompok (RAK) terdiri dari 5 perlakuan dan 3 ulangan, yakni perlakuan A (60 ind/poket), B (75 ind/poket), C (90 ind/poket), D (105 ind/poket), dan perlakuan E (120 ind/poket). Ukuran spat yang digunakan rata-rata 1 cm pada poket (keranjang pemeliharaan) 45x60 cm2. Hasil penelitian selama 45 hari menunjukan bahwa pertumbuhan pada semua perlakuan tidak berbeda nyata, namun pertumbuhan terbaik dengan nilai 0,70 cm untuk pertumbuhan mutlak dan 0,69% untuk laju pertumbuhan harian dimiliki oleh kepadatan yang rendah yakni 60 ind/poket, disusul oleh perlakuan lainnya seperti perlakuan B,C,D, dan E. Hasil uji ANOVA, SR didapatkan hasil persentase yang berbeda nyata, yakni terdapat pada perlakuan A (60 ind/poket) dengan nilai SR 90,44% dan pada perlakuan E (120 ind/poket) dengan nilai SR 74,44%. Berdasarkan hasil penelitian, disimpulkan bahwa padat penebaran yang berbeda tidak berpengaruh nyata terhadap pertumbuhan spat kerang mutiara, namun berpengaruh nyata terhadap tingkat kelangsungan hidup (SR) spat kerang mutiara (Pinctada maxima) yang dipelihara selama 45 hari.Kata kunci : Pertumbuhan, kelangsungan hidup, spat, Pinctada maximaAbstract : The study of pearl shell spat density maintained in nature needs to be continued because there is no standard level of density suitable for commercial businesses. Therefore a study was conducted with the aim of knowing the effect of density on growth and survival rate of pearl oyster spat (Pinctada maxima). The method used is Randomized Block Design (RBD) consisting of 5 treatments and 3 replications, namely treatment A (60 ind / pocket), B (75 ind / pocket), C (90 ind / pocket), D (105 ind / pocket) ), and treatment E (120 ind / pocket). The size of the spat used was 1 cm on the pocket (maintenance basket) 45x60 cm2. The results of the 45-day study showed that growth in all treatments was not significantly different, but the best growth was 0.70 cm for absolute growth and 0.69% for the daily growth rate owned by a low density of 60 ind / pocket, followed by treatment others such as treatment B, C, D, and E. The results of the SR ANOVA test showed that the percentage results were significantly different, which were found in treatment A (60 ind / pocket) with SR values of 90.44% and in treatment E (120 ind / pocket) with an SR of 74.44%. Based on the results of the study, it was concluded that the different stocking densities had no significant effect on the growth of pearl shell spat, but significantly affected the survival rate (SR) of pearl shell spat (Pinctada maxima) which was maintained for 45 days.Keywords: growth, survival rate, spat, Pinctada maxima.

scholarly journals PENGGUNAAN KAPUR DOLOMIT [CAMG(CO3)2] PADA DASAR KOLAM TANAH SULFAT MASAM TERHADAP PERBAIKAN KUALITAS AIR PADA PEMELIHARAAN BENIH IKAN PATIN (Pangasius sp.)

2018 ◽  
Vol 5 (2) ◽  
pp. 195-208
Author(s):  
Zainal Umari ◽  
Marsi . ◽  
Dade Jubaedah
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Feed Efficiency ◽  
Fish Growth ◽  
Acid Sulfate Soil ◽  
Acid Sulfate ◽  
Poor Water Quality ◽  
Absolute Growth ◽  
Fish Survival ◽  
Soil Area

ABSTRACTAcidic waters was common problem in aquaculture in acidic soil area. Poor water quality in the acid sulfate soil pond has potential to decrease fish survival rate dan fish growth. Liming pond is one of method to neutralize (buffer) acid in fish pond. The aim of the research is to determine the best dosage of dolomite lime [CaMg(CO3)2] in acid sulfate soil pond to water quality, survival rate and growth of catfish. The research conducted on September-October 2016 in Laboratorium Kolam Percobaan, Program Studi Budidaya Perairan, Fakultas Pertanian, Universitas Sriwijaya, Indralaya. The research based on completely random design with four treatments and three replications. The treatments were different dosage of dolomite lime that are 6 (P1), 9 (P2), 12 (P3), and 15 (P4) ton/ha equivalent CaCO3. The research parameter were water quality, survival rate, and growth. The result showed that dosage 12 ton/ha was the best treatment that has highest survival rate 96.6 %, absolute growth of length 3.5 cm, weight 7.91g and feed efficiency 106,77%. Keywords: liming, dolomite, acid sulfate soil, seedling catfish

scholarly journals Tifton 85 grass responses to different nitrogen levels and cutting intervals

2016 ◽  
Vol 37 (4) ◽  
pp. 2067 ◽  
Author(s):  
Loreno Egidio Taffarel ◽  
Eduardo Eustáquio Mesquita ◽  
Deise Dalazen Castagnara ◽  
Sandra Galbeiro ◽  
Patrícia Barcellos Costa ◽  
...  
Keyword(s):  
Block Design ◽  
Dry Mass ◽  
N Fertilization ◽  
Stem Length ◽  
Mineral Matter ◽  
State University ◽  
Plant Structure ◽  
Nitrogen Levels ◽  
Randomized Block Design ◽  
Nutritional Characteristics

The objective of this study was to evaluate the influence of five levels of N and two regrowth intervals on the structural, productive, and nutritional characteristics of Tifton 85 grass (Cynodon spp). The experiment was conducted in a hay production field at the State University of West Paraná, planted in 2004 with Cynodon spp. cv. Tifton 85. The experiment was established in a randomized block design with factorial treatments of five N fertilization amounts (0, 25, 50, 75 and 100 kg ha-1 cut-1) applied as urea after each cut, and two regrowth intervals (28 and 35 d), with four replicates. N application promoted changes in plant structure, such as increased canopy height, stem length, leaf elongation rate, and dry mass (DM) production. The greatest N use efficiency, considering the four harvests, occurred in the plot with 25 kg N ha-1 cut-1 at the 35-d interval, with a production of 13.79 kg DM kg-1 of N applied. A nutritional analysis indicated that 100 kg ha-1 of N cut-1 promoted higher crude protein (CP) at 28 d, with the highest concentration observed in the fourth cut (208.2 g kg-1 DM) and the lowest in the second cut (140.12 g kg-1 DM). The content average in the four cuts for CP and LIG at 28 days of regrowth was 175.85 and 104.33 kg-1 g MS and at 35 days of regrowth interval was of 164.45 and 118.65 g kg-1 DM, respectively. No differences were found between regrowth intervals in the contents of mineral matter and acid detergent fiber (ADF). Environmental factors including the wide variation in precipitation (greater than 200 mm between the peak in December 2010 and the lowest in March 2011) greatly influenced Tifton 85 grass production, affecting DM and the nutritional value of the forage in each cut.

scholarly journals Pertumbuhan, hasil, dan kandungan kromium kangkung darat akibat kombinasi macam dan dosis bahan organik pada media tanam tercemar

Kultivasi ◽  
2019 ◽  
Vol 18 (3) ◽  
Author(s):  
Intan Nurcahya ◽  
Noertjahyani Noertjahyani ◽  
Hudaya Mulyana
Keyword(s):  
Heavy Metal ◽  
Block Design ◽  
Organic Fertilizer ◽  
Water System ◽  
Growth Yield ◽  
Dry Weight ◽  
Growth And Yield ◽  
Water Spinach ◽  
Polluted Soils ◽  
Randomized Block Design

Sari. Kangkung darat merupakan salah satu tanaman yang dapat menyerap logam berat. Hal ini berkaitan dengan pertumbuhan, hasil, dan keamanan kangkung sebagai bahan konsumsi. Pencemaran lahan pertanian dapat disebabkan dari kegiatan industri, salah satunya yaitu limbah penyamakan kulit yang mengandung logam berat kromium yang mengairi lahan pertanian. Pemberian bahan organik merupakan salah satu cara untuk meningkatkan hasil tanaman kangkung darat dan menyerap logam berat. Penelitian bertujuan untuk mengetahui pengaruh kombinasi macam dan dosis bahan organik pada media tercemar kromium penyamakan kulit terhadap pertumbuhan, hasil dan kandungan kromium pada tanaman kangkung darat. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan sembilan perlakuan dan tiga kali ulangan. Perlakuan kombinasi macam dan dosis bahan organik terdiri dari serasah daun, pupuk kandang kambing, dan kascing dengan dosis masing-masing 5 t ha-1, 10 t ha-1dan 15 t ha-1. Hasil penelitian menunjukkan bahwa perlakuan kombinasi macam dan dosis bahan organik pada media tercemar kromium penyamakan kulit berpengaruh nyata terhadap pertumbuhan, dan hasil tanaman kangkung darat. Kombinasi kascing 15 t ha-1 memberikan pengaruh yang lebih baik terhadap tinggi tanaman, bobot segar per tanaman, dan bobot kering per tanaman, sedangkan pemberian serasah daun 5 t ha-1 menghasilkan tanaman kangkung darat dengan kandungan kromium yang lebih rendah (51,33 mgkg-1) dibandingkan perlakuan lainnya tetapi tanaman dengan kadar tersebut belum aman untuk dikonsumsi.Kata Kunci : kangkung darat, bahan organik, kromium, hasilAbstract. Water spinach is a heavy metal accumulator plant if grown in polluted soils. This raises the concern of water spinach safety as one of the most consumed vegetables in Asian household. Land pollution in water spinach cultivation area can be caused by industrial activities that involve heavy metals such as tannery. Industrial waste such as chrome leaches to the water system that eventually will be used as irrigation source for agriculture. Organic fertilizer is a potential solution to increase water spinach growth, yield, and absorb heavy metal contaminants. This research evaluated the effect of type and dosage of organic fertilizer on water spinach that grown in chromium-polluted soils. This research design used Randomized Block Design (RBD) with nine treatments and three replication. The treatment of combination of types and dosages of organic fertilizer. There were dried leaves, goat manure, and vermicompost with dosage of 5 t ha-1, 10 t ha-1 and 15 t ha-1. The results of this research showed that the effect of combination of organic fertilizer type and dosages at chrome polluted media gave better effect on growth, and yield of water spinach. Giving vermicompost of 15 t ha-1 gaves better effect on plant height, fresh weight of plant, and dry weight of plant, meanwhile the doses of 5 t ha-1dried leaves showed the lowest chrome content compared to other treatments, but these plants are still unsafe for consumption due to high chrome content.Keywords: water spinach, organic fertilizer, chromium, yield

scholarly journals The Use of Natural Anesthetic Ingredients for Clove Oil in Transportation of Juvenile Swordtail (Xiphophorus helleri)

2021 ◽  
pp. 1-8
Author(s):  
Kelvin Manik ◽  
Walim Lili ◽  
. Rosidah ◽  
Roffi Grandiosa
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Effective Treatment ◽  
Induction Time ◽  
Recovery Time ◽  
Block Design ◽  
Effective Concentration ◽  
Clove Oil ◽  
Xiphophorus Helleri ◽  
Randomized Block Design

This research aims to determine the most effective concentration of clove oil and the best period in the transportation of swordtail (Xiphophorius helleri) with the highest survival rate. This research used the factorial randomized block design (FRBD) which consisting of four treatments of concentration (10 x 10-3 mL, 13 x 10-3 mL, 16 x 10-3 mL), three treatments of duration (3 hours, 5 hours, 7 hours), and repeated three times. The measured parameters are induction time, conscious recovery time, and survival rate after transportation. The results showed that the treatment of 10 x 10-3 mL with the duration of 5 hours was an effective treatment with an average induction time of 17 minutes 56 seconds, a conscious recovery time of 7 minutes 37 seconds, the survival rate of 100% at post-transportation and after 7 days of rearing is 83%. Water quality after transportation are temperature (24.6 ℃), DO (14.72 mg / L), pH (6.42) and ammonia (0.0043 mg/L).

scholarly journals Correlation between Qualitative Characteristics and Genotype Resistance of Local and Introduced Pepper Varieties Against Anthracnose Disease

2020 ◽  
Vol 3 (1) ◽  
pp. 43
Author(s):  
Siti Hafsah ◽  
Firdaus Firdaus
Keyword(s):  
Block Design ◽  
Stem Diameter ◽  
Stem Length ◽  
Skin Thickness ◽  
Fruit Length ◽  
Randomized Block Design ◽  
Randomized Design ◽  
High Heritability ◽  
Diversity In Stem ◽  
Moderate Resistance

This study was aimed at obtaining information related to genetic parametric against anthracnose diseases caused by Colletotrichum capsici, which attacked several pepper genotypes. The research was conducted in a net house at the Faculty of Agriculture, Universitas Syiah Kuala, Banda Aceh, from July to December 2017, and it was divided into two experiments: 1) planting the peppers which carried out in a net house. This experiment employed Randomized Block Design (RBD) Non-Factorial and 2) anthracnose resistance assay.  This assay applied using Completely Randomized Design (CRD) Non-Factorial with the only factor observed: 11 pepper genotypes (IPBC15, IPBC15D2, IPBC15D3, IPBC15D4, Udeng, Lamando Lapaben, Super Amando, Lanyoe, Lado F1, Kastilo F1, and PM999 F1), with three replications. The results showed that the genotypes IPBC15, IPBC15D2, IPBC15D4, Udeng, Lamando Lapaben, Lado F1 exhibited moderate resistance, while genotypes IPBC15D3, Super Amando, Lanyoe, Kastilo F1 and PM999 F1 were susceptible to the disease. The wide variety of genetic and high heritability was found in stem length, flowering age, length of fruit stalk, fruit length, fruit diameter, and skin thickness, while narrow and moderate genetic variability was found in stem diameter and harvest age. The coefficient of genetic diversity in stem length, length of fruit stalk, and fruit length was found to be moderate and expressed low diversity in stem diameter, flowering age, and skin thickness. Stem diameter and skin thickness also showed a negative correlation to disease severity.

scholarly journals GROWTH ANALYSIS OF HYBRID Eucalyptus urograndis (E. grandis x E. urophylla) IN RESPONSE TO SIMULATED DRIFT OF AUXINIC HERBICIDES

2018 ◽  
Vol 42 (1) ◽  
Author(s):  
Gislean Pereira Carvalho ◽  
Eduardo Andrea Lemus Erasmo ◽  
Marcelo Rodrigues dos Reis ◽  
Girlânio Holanda Silva ◽  
André Amaral da Silva ◽  
...  
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Weight Ratio ◽  
Complete Recovery ◽  
Growth Ratio ◽  
Hybrid Plants ◽  
Randomized Block Design ◽  
Absolute Growth ◽  
Hybrid Eucalyptus ◽  
In The Beginning

ABSTRACT The aim of this study was to evaluate growth rates of E. urograndis under application of triclopyr and fluroxipyr+triclopyr herbicides. Was used a randomized block design with four replications in a factorial design (3x2x5), corresponding to herbicides (triclopyr and fluroxipyr+triclopyr), both with two doses (0.75 and 1.5% concentrations of 480 g and L-1 for triclopyr and 80+240 g and L-1 for fluroxipyr+triclopyr), plus one control (plants that did not receive herbicide application) and five evaluation dates at 15, 30, 45, 60 and 75 days after application (DAA). At 45 days after seedlings transplant, applications were performed with pressurized carbon dioxide backpack sprayer, equipped with beak tip (XR 110.02) with spray volume of 200 L ha-1 and constant pressure of 35 kgf/cm2. Were evaluated: leaf area (LA), specific leaf area (SLA), leaf area ratio (LAR), leaf weight ratio (LWR), absolute growth ratio (AGR), relative growth ratio (RGR) and net assimilatory ratio (NAR). The drift of triclopyr and fluroxipyr + triclopyr herbicide in the hybrid E. urograndis affect plant development in the beginning of the establishment. At 75 days after simulation drift of herbicides the plants showed characteristics of the symptoms of intoxication. It’s necessary to perform studies after 75 DAA to verify the complete recovery of the intoxication symptoms of E. urograndis hybrid plants resulting from the herbicide drift in the present study.

scholarly journals THE EFFECT OF DENSITY TO THE SURVIVAL RATE, GROWTH AND BIOCHEMICAL COMPOSITION OF FEMALE MANGROVE CRAB (SCYLLA OLIVACEA) CULTIVATED WITH SILVOFISHERY SYSTEM

2020 ◽  
Vol 8 (6) ◽  
pp. 20-25
Author(s):  
Muhammad Yusri Karim ◽  
Khairul Amri ◽  
Hasni Yulianti Azis ◽  
Nurfadilah ◽  
Alimuddin ◽  
...  
Keyword(s):  
Survival Rate ◽  
Biochemical Composition ◽  
Block Design ◽  
The Body ◽  
Mangrove Area ◽  
South Sulawesi ◽  
Mangrove Crab ◽  
Randomized Block Design ◽  
The Difference ◽  
Mangrove Crabs

Mangrove crab silvofishery system is one of the potential aquaculture activities to be developed because it is supported by the availability of extensive mangrove areas. This research was carried out in the Mangrove Area of Mandalle Village, Pangkep Regency, South Sulawesi. The study was aimed to determine the best density of survival, growth, and chemical composition of the body of female mangrove crabs (Scylla olivacea) maintained by the silvofishery system. The research container used a step cage made of bamboo measuring 2.25 m2 wide. Tested animals used were female mangrove crabs measuring 155 ± 1.0 g which were kept for 40 days. The study was designed using a randomized block design consisting of four density treatments with three replications each. The four densities were: 5,10, 15 and 20 crabs/cage. The results of the analysis of variance showed that the difference in density has a very significant effect (p <0.01) on the survival, growth and biochemical composition of the female body of mangrove crabs. The best survival, growth, and biochemical composition produced the best density of 5 and 10 individuals, while the lowest density was 20 individuals.  

scholarly journals Growth and yield of lettuce cultivars under organic fertilization and different environments

2018 ◽  
Vol 8 (2) ◽  
pp. 264-274
Author(s):  
Alisson Franco Torres da Silva ◽  
Rodrigo Cirqueira Avelino ◽  
Leonardo Pereira da Silva Brito ◽  
João Carlos Rocha dos Anjos ◽  
José Valdenor da Silva Júnior ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Block Design ◽  
Growth And Yield ◽  
Stem Length ◽  
Organic Fertilization ◽  
Randomized Block Design ◽  
Lettuce Growth ◽  
Number Of Leaves ◽  
Lettuce Yield ◽  
Different Doses

Lettuce (Lactuca sativa L.) is a leafy vegetable that could be grown under mineral or organic fertilizing, being also very influenced by environmental conditions. This study evaluated the growth and yield of lettuce cultivars submitted to different doses of organic fertilization and environmental conditions. The experiment was carried out at the Horticulture Sector of the Campus Cinobelina Elvas, at the Federal University of Piauí (CPCE/UFPI), Brazil. The experimental was carried out in a completely randomized block design, with the treatments distributed in split-split-plot, according to cultivation systems in the plots (with 50% of shading and outdoor cultivation), organic fertilization rates in subplots (0, 20, 40, 60 and 80 t ha-1) and lettuce cultivars in the sub-subplots (‘Delícia’, ‘Babá de Verão’ and ‘Itapuã 401’) with three repetitions and with eighteen plants per experimental unity and four useful plants per plot. Plant height, number of leaves, head circumference, stem length, leaf area, leaves chlorophyll content, commercial fresh mass, shoot dry matter and lettuce yield were evaluated. For the conditions in which the present study was carried out, the use of doses of organic fertilization with cattle manure influenced lettuce growth and yield using 50% of shading and is also suggested the use of the cultivars ‘Delícia’ and ‘Babá de Verão’, in a protected environment (50% of shade).

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